@article{SMJ2_2011_37_2_a4,
     author = {Kurdachenko, L. A. and Subbotin, I. Ya.},
     title = {On {Groups} whose {Contranormal} {Subgroups} are {Normally} {Complemented}},
     journal = {Serdica Mathematical Journal},
     pages = {163--172},
     publisher = {mathdoc},
     volume = {37},
     number = {2},
     year = {2011},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SMJ2_2011_37_2_a4/}
}